Window-lock.



L. E. DE NEERGAARD.

'wl'NDow LOCK.

APPLICATION FILED FEB. I0. 1912.

Patented Oct. 26, 1915.

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lL'. DE NEERGAARD.

wlNDow LOCK. j

-APPLICATION FILED FEB. 10. |912. L'm?. Patented 0@t.26,1915.

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Fig?! Fig/7 3 WITNESS/5S.' Flag /NVENTH Lewis Elmeiydejlkrgaard.

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narran emerse rnirnnfr ergeren LEWIS ELIVIER DE NEERGAARDNOF PORT CHESTER, NEW YORK, ASSIGNO'R, BY MESNE ASSIGNMENTS, TO TECHNOLOGY SALES'CO.,INC., OF NEW YORK, N. Y.

WINDOV-LOCK.

Specification of Letters Eatent.

reame-teu oet. ce, raie.

To all whom t may concern.'

Be it known that I, Lnwls ELMER` VDE NEERGAARD, a citizen of the United States, residing in the city of Port Chester, county of l/Vestchester, and State of Newv York, have invented certain new. and useful lmprovements in Window-Locks, of which the following is a full, clear, and eXact description, reference being had to theaccompanying drawings, forming part of this specification. y

This invention relates` to improvements in window locks and particularly to that class of window locks comprising a stationary member attached to the inner sash of a Window and two clamping members v slidably connected thereto, adapted toclampthe device between the outer sash andthe frame molding of the same so as to secure the sashes in position and to preventthe opening` the window from theoutside. l

'lhe primary object of this invention is to provide a window lock which shall be strong and durable and which shall entail a low cost of manufacture, at the saine time being attractive both indesign and :appearance.

A further object of this invention is to provide a window lock which shall loe effective in locking both the outer and the inner sash of a window, and that `besides insuring; the safety of the saine shalleectively prevent the rattling of the window due to the wind.

Another object of this inventionv is to provide a window lock of a simple and inexpensive construction capable of exerting a powerful grip, at the same time having a wide range of adjustment, and therefore adapted for use in different sizes of windows. i

A still further Objectis to provide a window lock for the purposesinentioned Vhavinnmeans for securing the same to thejinner sash of a. window in order toiprevent the easy removal ofthe same,wan'd which shall have convenient means for voperating the .same in a quick manner.

An additional object of this invention is to provide a window lock having two clamping' members provided with serrations in two opposite selfisesand capa-ble therefore of locking the sashes 4 of a window against motion, in opposite directions. 'f

vWith these and other will more fully appear as the description proceeds, this invention consists in certain constructions and arrangements of parts as will be hereinafter described and claimed inthe appended claims.

T he main object of window locks of the character to which this invention refers, is to fasten the window in any position, and toprevent the same from being opened from the outside. Several devices constructed to this end have come to my notice, but l have found that these are all more or less inconvenient for use, especially on account of lack of means for fastening; the devices to any part ofa window to whichthe same is objects in view as I applied. The consequence of this is that the device can be easily removed and stolen, and at every occurence in which the window is operated, the removal and the replacing rof `thesafety lock requires a certain amount of time and attention. These devices are also generally operated by a separate key which is sometimes lost or misplaced; this is quite goed for locking windows for a certain length of time, for instance when a residence is closed, but for every day use, the lack of attached operating means is a serious inconvenience in a device of this kind.

The disturbing' effects of .the rattling of window sashes due to the wind are also generally known, and in designing my .safety lock, l have found it convenient to embody into the construction of the saine, means which shall effectively prevent this serious annoyance. While my device can exert a most powerful grip such as will be cuite sufiicient for the purposes for which .the same is intended, in the manufacture of the same l have carefully avoided the use of threaded parts which are necessarily costlier than die produced sheet metal parts; and l also have sought to avoid the use of parts prominently projecting from thesurface of the device, which render the same clumsy in design and less attractive in appearance. y Y

Referring to the drawings, Figure 1 is a front view in elevation of a device built in accordance with my invention in which one of the clamping members slides within the other, Figs. 2, 3, 4i., and 5, are respectively a plan sectional view, a side view in eleva- Cil yor key for the same.

v suitable means.-

tion from the inner end; a detail side view in elevation partly broken away from the outer end; and a sectional side viewin elevation of the same; Fig. 6 is a plan view of a key or wrench which may be used forfoperating my device; Fig. 7 is a side viewY in elevation of the same; Fig. 8 is a perspective view illustrating theV application of a device built in laccordance with my invention. of a somewhat sim iler design than the 4device shown in Fig. 1, to a window of the ordinary kindgl Figs. 9 and 10 are respectively a plan viewV partly sectioned, and a detail view in elevation partly Ybroken away, illustrating the application ofA a ldevice built @along similar line`srfor clamping together the frames of Venetian blinds; Fig. 114 is a plan sectional view of a Vdevice slightly different ln construction from that shown in VvFigf8; Fig. 12 is a front view in elevation of the same fitted with an operating articulated-wrench; Figs. 8, 14 and 15 are respectively a side `sectional view; a detail Vside vView in elevation fromthe outer end; and a side *view in elevation from the inner end Vof the device illustratedvin Figs. 11 and 12;

F i0. l'tris a front view in elevation of a 'similar device having an attached handle;

Injthedevice shown in Figs. 1 to 5, 25 designates a stationary member serving as a bearing plate or backing element and provided with a lug or projection 26, having passages 27 for the screws fastening the Adevice to the inner rsash of a window. The device as represented is supposed to be mounted on a window of the usual type in which the inner sash occupies the lower section of the Window when'rthe same is closed.

Lug or projection 26 will therefore rest on the top railing of the inner sash and will be retained thereon by fastening screws or by any other suitable means. f Y

28is a, rea-r Vclamping member longitudinally movable on said stationary member 25,

provided'witha serrated liange 29.

30 designates a front clamping member provided with a serrated flange 31 slid-ably connectedfto said member 28 by means of retaining flanges v32, V33, or by any other 84 is an operating member provided with cam-acting slots 35, 36, and pivotally mounted in 37 in any suitable manner, for instance, by means of a rivet 38 attached to the stationary member 25, as clearly shown in Fig. 2.

I nal motion of member 28 in relation to stationary member 25. As I have stated, member 304s in its turn slidably connected to `member 28, and when assembled the different parts are held together by rivet 38.

Member 28 is provided with a` stud or rivet 47 projecting through slot 35, and member 30 is provided with ay stud or rivet 48 projecting through slot 36; it can be clearly understood by examining the drawings that if member 34 is caused to rotate on y its'pivot 38, slots 35, 3G will cause the in or out motion of the members respectively cngaged by means of the action exerted by said slots on the studs or rivets respectively inserted therethrough. i In the device just described, the range of adjustment of each member is given by the radial difference between the inner and the outer points of its controlling slot: and its total adjustment will be the sum of the two individual adjustments. I have found that for all ordinary purposes this arrangement gives a range wide enough to make the device suitable for any size window, at the same time exerting a most powerful. clamping action.

It is obvious that the more development reach slot will have for the same amount of motion of the member controlled thereby, the more powerful the grip will be on account of the diminished angle of action of the cam-surface acting against the rivet or stud. Therefore in certain instances where a limited range of adjustment is suliicient, a half a Vrevolution or less of member 34, con- Vveniently.accomplished b v means of a handle or wrench integral therewith, will be sufcient for operating the same. In other instances it may be necessary to rotate member 34 for more than half a revolution in order to render the device useful for a larger size Window, and in these instances it may be preferable to operate the device with a. separate handle or wrench 49, provided with prongs 50, such as illustrated in Figs. 6 and 7. To this end member 84 will be pro* vided with suitable openings or notches 51 adapted to receive prongs of said operating handle 49.

In Fig. 8 I illustrate a device similar to thatrepresented ink Fig. 1 attached to the lower sash of a window by means of screws mounted on a window, it can be seen that v an y key orhandle integral with the operatingmember and projecting beyond its periphery would scarcely allow more thanhalf a revolution of the same to be made, since Vsaid projecting handle or key would strike at the two opposite ends of its course against the top of the inner sash. Such is the case for instance in connection with the device shown in Fig. 16, which will be at a later point described. v

Referring again to Figs. 1 to 5, it is seen that flange :29 is arranged to clamp against the inner frame molding of a window, while flange 31 is arranged to clamp against. the inner surface of the outer sash, and is therefore made narro'lver in order not to deface the same. Said flanges are both provided with serrations engaging the respective surfaces so as to prevent the window from being operated from the outside. 1n such devices as have come to my notice and built for the same purposes, these serrations are provided in one sense or direction only, and l have found that while the devices are very effective in preventing the motion of the outer sash in one direction, the same can be moved in the opposite direction with comparative ease; 1 therefore prefer to provide the clamping flanges with serrations in one sense, and serrations 56 in the opposite sense, so that the window will be securely locked against movement in both directions..

ln Fig. 1,1 show operating member 34e provided with teeth 57 along itscircumference against which rests a spring 5S attached to a lug or projection 26.V The object of this is to illustrate means which may be provided when desired to hold thefdevice in its clamped position, further insuring the safety of the sameg'in fact, teeth 57 are so formed that the same will permit the motion of member 3lin the .clamping direction, and spring 58 will prevent any return motion of the same unless the same be depressed by hand or otherwise detached from the same. Then properly modied my device can also be applied to clamp together from the inside, the so-called Venetian blinds,` so as to prevent their being opened; Figs.V 9 and 10 refer to such a modified device in which the clamping flanges 59, 60 are serrated on the inside, and exert an inward clamping action to hold together the uprights G1, 62, of the blinds. y l

From the foregoing it is seen that l provioe a device which can effectively clamp a window in any position, and at the same timebe secured to the same; moreover, the securing of the stationary member of my de vice to the inner sash of the window will effectively prevent the rattling of the same due to the wind, and will thus avoid the cause of much noise and annoyance.

Figs. 11 to 15 refer to a slightly different construction of my device which l. have found preferable to the one formerly described, on account of its greater solidity and of its lower cost .of manufacture. 1n the said figures is also illustrated a form of articulated wrench which may be also used in connection with any of the devices shown when desired.

In the said figures both the'rear clamping member 63 and the front clamping member 64 lare slidably connected to a stationary member G5, and retained thereby by means of flanges 66, 67, 68, 69,01' by any other suitable means. Said stationary member 65 is provided with a lug or projection used in the manner heretofore described, which secures the device on the inner sash of the window to which the same is applied.

The operation of this device is in all respects quite similar to the operation of the device represented in Figs.` 1 and 8, but theconstruction shown, where both clamping members are retained by the stationary member by means of -flanges integral with the same, is much stronger and preferable to the one formerly described in every respect. Y

71 isa slotted operating member pivoted on a rivet or stud 72, and provided with notches 73; on the same is also pivoted part 7e'l ,of an operating wrench which may be used Vin connection with my device at the end of which 75 is hinged or otherwise pivotally connected handle 76, provided with u tongue or lre'v 7 7 adapted to engage notches 73. By means of this wrench, operating member 71 can be rotated through as wide an angle as desired.

1n Fig. 16 1 illustrate a device similar to that Vshown in Fig. 1E?I inserted in. clamping position g the cam-acting member however, in the style shown h an operating handle integral with the same, and consequently the slots in the same are limited to substantially half a turn, tl is being all that is possible to effect in a device having a rigid projecting handle integral with the cam-acting meme bei', for the reasons hereinbefore stated.

Figs. 17 to 19 illustrate a device substantially similar to that shown in Fig. 12, but embodying different operating means. ln this, 78 is stationary member which may be attached to the inner sash by means of lug or projection 7 9; 80 isthercar clamping member and 81 is the front clamping member; said clamping members are slidablv mounted on said stationary member and retained by the same by means of flanges, 82, 83, S4, 85. Each clamping momy 90 provided .in a lug `.91,.centrally vprojecting from vthe surface of part 78 and preventing side motion ofsaid operating` screw. f The use' of an operating or clamping screw in'sash-holdingdevices-hitherto provposed is not new and no claim is made vto this feature alone. The combinationofvan operating screw with a device of the type herein disclosed.V comprising a stationary member attached to the innen-window sash and` slidabiev clamping members, however, is new and the saine may be adopted when an exceptionally 'strong clamping action is desired, in the majority of casesI however, the use of a screw is quite unnecessary, and I prefer to use Vthe l'cam-slotted member shown/in the other1V drawings.

' As I have heretofore pointed out, there areinstances in `which it is convenient that thed'evicesbeoperated by aseparate key or wrench5'while in many otherrcases it is preferable that the operating key or wrench be integral withthe de vices so that the same may -be readily` operated fork ordinary purposes@ InV Figs.. 20' and 2l, -I' illustrate a form of Voperating key or'wrench embodying the advantages of both the stationary key and thereniovable one. v

. YIn said figures, 92 is a cam-slotted member adapted to operate one ofthe devices shown, and provided with lugs r projet tions .93vvslightly curved inward and then y s outward, just enough to give some resiliency to the "same, 94 is a wrench provided with notches 95 adapted Vto interlock with said Vlugsfor projections 98, and built so as to l" fe a small pressure to be 'snapped in positionbetween two opposite lugs and to be retained by theV same'.v 'Said wrench is therefore adapted to be retained bythe olevice" for all ordinary.requirements and to performthus the functions of handle v'in'- `tegral. with. the cani-acting memben When it is'necessary or desirable, said handle can be easily Vremoved and stored away for further use. f Y j 1 j Having thus described and ascertained ythe nature of my invention what I claim as new and desire to secureby Letters Patent ofthe United-.States is:

l. A windowrlock comprising i stationary bearing .membeig two Y clamping vmembers mounted thereon and slidably connected thereto, andcamslotted means for operating saidV clamping members; for'the purposes as set forth.

f 2.Y A window lock comprising a stationary bearing memberhaving means for securing the same to 'l the inner Ywindow sash, two clamping members mounted thereon 1 and slidably connected thereto, and cam-slotted means for operating said clamping membersg'for the purposes as set forth.

V3. In a window lock the combination of a stationary bearing member having means for securing the same to the inner window sash, vtwo clamping members mounted thereon and slidably connected thereto provided with serrated flanges, and cam-slotted means for operating said clamping members; for the purposes as set forth.

4. In a window lock the combination of a stationary bearing member, two clamping members mounted thereon and slidably connected thereto, and Cain-slotted means mounted on said stationary bearing member for operating said clamping members.

5. In a window lock the combination of a stationary bearing member having means for securing the same to the iimer window sash, two clamping members mounted thereon and slidably connected thereto provided with serrated iianges, and a cam-acting member pivotally mounted on said stationary bearing member operating said clamping members; for the purposes as set forth.

6. In a window lock the combination of a stationary bearing member, two clamping members mounted thereon and slidably connected thereto, a slotted cameacting member pivotally mounted on said stationary bearing member, and members projecting from the surface of said clamping members through said slotted cam-acting member, and controlled thereby, for operating said members; for the purposes as set forth.

7. Ina window lock the combination of a stationary bearing member having means for securing the same to the inner window sash, two clamping members mounted thereon and slidably connected thereto having serrated flanges, a slotted cam-acting member pivotally mounted on said stationary bearing member, and members projecting from the surface of said clamping Ymembers through said slotted cam-acting member, and controlled thereby, for operating said members;

for the purposes as set forth.

8. In a window lock the combination of a stationary -member having means for securing the same to the innerwindow sash, two serrated clamping members mounted thereon and slidably connected thereto, a camacting member pivotally mounted on said stationary bearing member operating said clamping members, and means for operating said cam-acting member; for the purposes as set forth.

9. In a window lock the combination of a stationary member, two clamping members slidably connected thereto, a cam-acting member pivotally mounted on said stationary member controlling said clamping membei's, and, an articulated wrench pivoted coaxially with and secured to said cam-acting member, for operating the same; substantially as set forth.

lO. ln a Window lock the combination of a stationary bearing plate having means for securing the same to the inner Window sash, tvvo clamping members having 'flanges provided with oppositely engaging serrations, a slotted cam-acting member pivotally mounted on said stationary bearing plate, members projecting from the surface of said clamping members through said slotted cam-acting member, and controlled thereby, for operating said members, and means for operating said cam-acting member; substantially as described, and for the purposes as set i'orth.

ll. 1 Window lock comprising a bearing plate, means for securing said plate in a vertical position on a Window sash, a pair of clamping plates slidably held by said bearing plate, and means for simultaneously sliding said clamping plates in opposite directions into or out ot clamping position.

l2. A Window lock comprising a bearing plate, means for securing said plate in a vertical position on a Window sash, a pair of clamping plates slidably held by said bearing plate and provided With serrated gripping portions, an operating member rotatably mounted on said bearing plate and provided With curved slots, and projections on said clamping plates engaging said slots, whereby said clamping plates may be moved into or out of clamping position.

13. A Window lock comprising a bearing plate, means for securing said plate in a vertical position on a Window sash, a pair of clamping plates slidably held by said bearing plate and provided with serrated gripping portions, an operating member rotatably mounted on said bearing plate and provided With curved slots, projections on said clamping plates engaging said slots, Whereby said clamping plates may be moved into or out of clamping position, and adjustable means engaging said rotatable operating member to prevent reverse rotation thereof When said clamping members are in clamping position.

14. A Window lock comprising a stationary backing or bearing member, clamping members slidably held by said bearing member, cam-slotted means mounted on said bearing member for moving said clamping members into or out of clamping position, and means for retaining said clamping members in clamping position.

15. A. Window lock adapted to be secured to the lower sash of a Window comprising a backing plate provided with means for securing said plate vertically upon and transversely of said upper rail, clampingplates slidably mounted on said backing plate, and a rotatable operating member engaging said clamping plates and arranged to move the same into or out of clamping posit-ion,

LEWIS ELMER DE NEERGARD.

Vitnesses:

ANNA ABnLorr, SIGMUND NEWMAN.

Copier of this patent may be obtained for ve cents each, 'by addressing the Commissioner of Patente, Washington, D. C. 

